"Karyology of a population of Dugesia benazzii (Tricladida Paludi­cola) with B-chromosomes". A karyological analysis has been carried out on specimens of the planarian Dugesia benazzii collected in Conca stream (Corsica). In this popu­ lation, which reproduces mainly by fìssion, only few individuals become sexual; the latter condition, moreover, is not constant. Bothe somaticand germ cells present polysomic. sets with rather large numerica!variations (from 18 to 28 chromosomes). In 85% of the cells examined, B-chromosomes, varying in number from 1 to 4, have also been observed. This study provides also a quantitative analysis of the karyometric data concerning both standard and B-chromosomes.

Cariologia di una popolazione di Dugesia benazzii (triclade paludicolo) con B-cromosomi

DERI, PAOLO
1981

Abstract

"Karyology of a population of Dugesia benazzii (Tricladida Paludi­cola) with B-chromosomes". A karyological analysis has been carried out on specimens of the planarian Dugesia benazzii collected in Conca stream (Corsica). In this popu­ lation, which reproduces mainly by fìssion, only few individuals become sexual; the latter condition, moreover, is not constant. Bothe somaticand germ cells present polysomic. sets with rather large numerica!variations (from 18 to 28 chromosomes). In 85% of the cells examined, B-chromosomes, varying in number from 1 to 4, have also been observed. This study provides also a quantitative analysis of the karyometric data concerning both standard and B-chromosomes.
Deri, Paolo
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11568/4719
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